County town of Somerset (7)
I believe the answer is:
taunton
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">county town of somerset</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for taunton that I've seen before include "SW town" , "County town of Somerset" , "Somerset's county town" , "Home of Somerset CCC" , "English town" .)